Reliability-based prediction of chloride ingress and reinforcement corrosion of aging concrete bridge decks

From National Research Council Canada

Download	View accepted manuscript: Reliability-based prediction of chloride ingress and reinforcement corrosion of aging concrete bridge decks (PDF, 680 KiB)
Author	Search for: Lounis, Z.¹; Search for: Amleh, L.
Affiliation	National Research Council of Canada. NRC Institute for Research in Construction
Format	Text, Book Chapter
Subject	Corrosion (of reinforced concrete); Corrosion/cracking
Abstract	This paper presents a probabilistic approach for predicting the chloride contamination of concrete and reinforcing steel corrosion, which takes into account the uncertainty associated with the analytical models of chloride transport, corrosion initiation, as well as damage accumulation, material properties, structural dimensions, and applied environmental and mechanical loads. The proposed approach is illustrated on an aging reinforced concrete bridge deck that has been exposed to chlorides from deicing salts for forty years. An extensive non-destructive and destructive evaluation of the corrosion-damaged deck was undertaken. The field survey data showed a considerable level of variability in all parameters measured with coefficients of variation ranging from 34% for the concrete cover depth to 86% for the diffusion coefficient. The distributions of the chloride concentration at the level of the top reinforcement mat and the time for its corrosion initiation were generated using Monte Carlo Simulation. The simulated results were very close to the field data, which illustrates the prediction capabilities of probabilistic methods as opposed to deterministic methods.
Publication date	2004-03-01
In	Life Cycle Performance of Deteriorating Structures (1 March 2004): 113–122.
Language	English
Peer reviewed	No
NRC number	NRCC 47011 NRC-IRC-16181
NPARC number	20378185
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Record identifier	c1b73d20-2b7b-43a7-b702-9675152bfb19
Record created	2012-07-24
Record modified	2020-03-03

Date modified:: 2024-07-20